Programmable Multiwavelength Radio Frequency Spectrometry of Chemophysical Environments through an Adaptable Network of Flexible and Environmentally Responsive, Passive Wireless Elements
Programmable Multiwavelength Radio Frequency Spectrometry of Chemophysical Environments through an Adaptable Network of Flexible and Environmentally Responsive, Passive Wireless Elements
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DOI：
10.1002/smsc.202200013
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发表时间：
2022-03
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通讯作者：
Manik Dautta;Amirhossein Hajiaghajani;Fan Ye;A. Escobar;Abel Jimenez;Kazi Khurshidi Haque Dia;Peter Tseng
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作者：
Manik Dautta;Amirhossein Hajiaghajani;Fan Ye;A. Escobar;Abel Jimenez;Kazi Khurshidi Haque Dia;Peter Tseng
多参数环境信号的读出通常使用单独需要独特信号调节电路和/或处理路径的离散传感格式。在这里，提出了完全由无源材料结构组成的自适应传感器网络，使得能够对化学或物理环境信号进行光谱联合监测。在这里，单个射频(RF)读取器首先与中间无线继电器线圈进行无线交互-这是长度可调的，并且可以设计成与表面一致。这种继电器(被融合在纺织品或表面上)然后被无线耦合到无源射频传感器阵列，这些传感器具有单独可编程的灵活性/对环境信号的反应性。然后，可以在可穿戴阅读器的单一光谱读数中监控多个化学和物理信号。这种技术可以在可调的长度范围内探测，并且对限制现有技术的机械干扰具有很强的健壮性。作为概念验证，这种方法用于监测营养、温度、压力、pH等化学物理指标，以及皮肤上或器皿上的更多信息，只需一个读数。这项技术可能构成零微电子传感器网络的基石。
Readout of multiparametric environmental signals typically uses discrete sensing formats that individually require unique signal conditioning circuitry and/or processing pathways. Here, adaptable sensor networks composed exclusively of passive material architectures that enable spectrometric comonitoring of chemical or physical environmental signals are proposed. Herein, a single radio frequency (RF) reader wirelessly interacts first with an intermediate wireless relay coil—this is tunable in length and can be designed to conform around surfaces. This relay (that is fused on textiles or surfaces) is then wirelessly coupled to arrays of passive RF sensors with individually programmable flexibility/reactivity to environmental signals. Multiple chemical and physical signals can then be monitored within the single spectral readout of a wearable reader. This technique can probe over tunable length scales, and is robust to mechanical disturbances that limit present techniques. As a proof of concept, this approach is used to comonitor chemophysical metrics such as nutrients, temperature, pressure, pH, and more on the skin or in utensils with a single readout. This technique may form a cornerstone of zero‐microelectronic sensor networks.